Aerator and cooler for liquids.



PATENTBD AUG. 8, 1905.

W. E. BAILEY. AERATOR AND COOLER FOR LIQUIDS.

APPLICATION FILED OCT. 29, 1904.

' 2 SHEETS-SEEET- 1 III I witnesses 5 W 4 PATENTED AUG. 8, 1905.

W. E. BAILEY.

AERATOR AND OOOLER FOR LIQUIDS.

APPLICATION FILED OCT. 29, 1904.

2 SHEETSSHEBT 2,

llll illflf'l'flllllfillt 1 Witnesses UNITED STATES PATENT OFFICE.

AEPATOR AND COOLER FOR LIQUIDS.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed October 29, 1904. Serial No. 230,588.

To It 1071 0177, it ntay concern.-

Be it known that 'LWILLIAM E. BAILEY, a citizen of the United States,residing at Harrisburg, in the county of Dauphin and State ofPennsylvania, have invented certain new and useful lmprovementsinAerators and Coolers for Liquids; and I do hereby declare the followingto be a full, clear, and exact description of the same, reference beinghad to the accompanying drawings,forming a part of this specification,and to the letters of reference marked thereon.

This invention relates to improvements in apparatus for cooling andaerating liquids, the form of the apparatus illustrated in theaccompanying drawings and particularly described herein being especiallydesigned for aerating and cooling milk; but it will be understood thatthe invention is not limited to this particular use, but is capable of ageneral use wherever it is desired to aerate or cool any liquids whileprotecting them from contamination or where it is desired to subject theapparatus to a sterilizing process by the use of steam confined in theapparatus itself.

The invention consists in a device for the purpose stated having aliquid supply or distributer, a receiver for the liquid, and anintermediate cooler and aerator having an extended surface over whichthe liquid flows from the distributer, the said parts being inclosed toform a duct or passage therethrough for the air for aeration or achamber for the steril izing-steam.

The invention further consists-in a cooler and aerator having aninternal cooling and aerating surface closed to the external air, buthaving means for supplying and passing a current of pure airtherethrough.

The invention further consists in a cooler and aerator having aninternal cooling and aerating surface, with means for closing saidaerator and cooler and supplying steam for sterilizing the cooling andaerating surface.

Finally, the invention consists in certain novel details of constructionand combinations and arrangements of parts, all as will be nowdescribed, and pointed out particularly in the appended claims.

Referring to the accompanying drawings, Figure l is a vertical sectionthrough a milk cooler and aerator embodying the present improvements.Fig. 2 is a similar figure through the modified form of milk cooler andaerator designed particularly for use where no supply of cool runningWater is available. Fig. '3 is a top plan View showing the covers orhinged lids for giving access to the interior.

Like letters of reference in the several figures indicate the sameparts.

Referring particularly to Fig. 1*, the letter A indicates a distributerwhich for convenience is shown in the form of a tank having lids A atthe top, through which the tank may be filled with the fresh milk, anddistributingopenings a at the bottom, through which the milk is allowedto escape and'whereby it is distributed evenly over the cooling andaerating surface. The distributer is provided with a central duct orpassage B, which may for convenience lead to the outside of the room orapartment in which the apparatus is located, a slip-joint, such as B,being located in the duct for a purpose to be presently described.Immediately below and in line with the distributer is the cooler andaerator, which in the preferred construction consists of a shell orcasing 0, having a central cooling or aerating surface over which themilk flows, said surface being preferably a corrugated or undulatingsurface, as indicated at I), the surface thus corresponding in somemeasure to the surfaces ordinarily employed for this purpose, althoughit will be understood that other and well-known arrangements forsecuring an extended surface and insuring the even distribution of themilk may be employed without departing from the invention. The casing Oand corrugated inner wall D constitute in the form of apparatus shown acirculating-tank for the cooling medium, which in this instance issupposed to be cold water, and suitable inlet and outlet pipes E and E,with stop-cocks c therein, are provided at bottom and top, respectively,for the admission and control of the cooling medium. The tank G for thereception of the cool and aerated milk is located immediately below thecooler and aerator just described, said tank being provided with acentral air duct or passage H, preferably alining with the cooling andaerated chamber and duct B of the distributer.

The three sectionsnamel y, the distributer, aerator proper, andreceiving tank-are formed separate from each other to facilitatemanufacture and cleaning and are adapted to be assembled in line withrelatively close fitting joints, and for convenience one may be seateddirectly on the other, as illustrated, and suitably connected where sodesired, the ob ect being to provide a structure through which an upwardcurrent of air may be caused to flow at the same time that the milk isallowed to flow down or in an opposite direction over the cooling andaerating surface and at the same time to protect said milk fromliability of contamination from the surrounding air or from insectswhich might gain access thereto were the cooling and aerating surfaceexposed in the apartment where the operators perform their duties. andoutlet openings may be screened or protected by suitable filters, andthe natural difference in temperature, due to the presence of the freshwarm milk, may be utilized as the means for creating the necessaryair-current through the apparatus, as shown, for instance, in Fig. 2,where the air-inlet is simply carried through the receiving-tank andprovided with screens or filters I; but in the preferred constructionmeans are provided for increasing the flow of air through the apparatusand for freeing said air from dust or contaminating bacteria. In orderto carry out this portion of the invention in the simplest possiblemanner, the water escaping from the cooling-tank is utilized as themeans for purifying and creating a current of air through the cooler andaerator, and for this purpose it is showered or allowed to drop freelythrough a vertically-arranged tower or pipe K, having near its upper enda screened air-inlet K and near its lower end a duct K which is put incommunication with the lower end of the duct H, the bottom of said towerbeing provided with an escape-pipe is, having a cap is adapted to form awater seal. The water passing into the tower K through the exit-pipe Eis distributed in the upper end of the tower by a screen or foraminousplate or plates 70 so as to be showered down through the toweruniformly. In action it will in the well-understood manner carry with ita large volume of air, entering through the opening K, which air will bethoroughly cleansed by the water and can only escape through the openingK leading into the cooler and aerator, as before explained.

To still further carry out the objects of the present invention, thedischarge for the receiving-tank G is preferably in the form of a pipeL, having a telescoping end L provided with a flange l, which is adaptedto be drawn down into intimate contact with the mouth of a can, bottle,or receiver placed beneath the same, as indicated in Fig. 1, thusproviding means whereby the milk may be discharged into the'can, bottle,or other receptacle without being exposed to the external atmosphere atall.

The discharge-pipe L may be provided with a stopcock Z, and as aconvenient means for admission of steam for the purpose of sterilizationa branch pipe M, having a stop-cock m, mayalso be provided.

Ob'vl ously any ordinary or preferred bot- Obviously the air inlettlingarrangement may be employed, if desired; but preference should be givento those forms in which the milk is not exposed to the air in itspassage to the bottles.

When it is desired to cleanse and sterilize the apparatus, it ispreferred that the air-passages should be closed, and to facilitate thisthe joint between the pipes K and H is a simple slip-joint, and a cap Nis provided for closing the lower end of the pipe H. If pressure isdesired, the upper end of the pipe B is also closed by a cap N, and thesterilization may be proceeded with without the escape of steam into theapartment and without subjecting the operators to the inconveniencewhich such escape would entail.

Where it is impracticable or undesirable to employ running water as thecooling medium, it is obvious that the tank or chamber for said coolingmedium may be enlarged for the reception of ice or a large body of coldwater, and in Fig. 2 such an arrangement isillustrated, the letter O inthis figure indicating a relatively large tank surrounding the coolingand aerating surface, said tank being provided with hinged lids 0,through which a tank may be filled with ice or ice and water.

When it is desired to mechanically clean the apparatus, it is obviousthat the three sections may be separated and each cleaned separately inthe ordinary manner; but it is preferred to support the whole apparatusfrom overhead beams, and in Fig. 1 in dotted lines hangers R are shown;but it will be understood that this is simply an illustration of awell-known means for supporting apparatus of this character now incommon use, and I do not wish to be limited to this particular means orto any other particular means, inasmuch as the particular installationof each apparatus and the conditions under which it is used will -to alarge extent control the way of mounting or supporting the severalsections; but in every instance the sections should be made separate andso assembled that they may be readily separated for cleaning purposes.

To secure a uniform circulation of the cooling medium, thecontrol-section may be divided to form a duct for the passage of thecooling medium, and in illustration of this idea baffle-plates are shownin dotted lines at S in Fig. 1.

While I have described specifically herein a cooler and aerator, it willbe readily seen that the apparatus is equally applicable to a heater andaerator, in which instance a heating instead of a cooling medium isemployed for controlling the temperature of the aerating-surface,andhence it will be understood that I do not wish to be limited in thisrespect by the use of the word cooling or cooler.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A liquid cooler and aerator embodying.

three separable sections assembled in vertical alinement to preventaccess of atmospheric contaminations,the central section comprising anexternal casing and an extended internal cooling and aerating surface,the top section comprising a distributer for distributing the liquid tothe cooling and aerating surface and the bottom section comprising areceiver for the cooled and aerated liquid; substantially as described.

2. A liquid cooler and aerator embodying three separable sectionsassembled in vertical alinement to prevent access of atmosphericcontaminations,the central section comprising an external casing and anextended internal cooling and aerating surface forming a passage throughthe section, the top section comprising a distributer for distributingthe liquid to the internal surface of the central section and having anair-passage therethrough, and the bottom section comprisinga receiverfor the cooled and aerated liquid and having an air-passagetherethrough, whereby air may be caused to flow through all saidsections; substantially as described.

3. In a cooler and aerator such as described, the combination with theliquid-distributer, cooling and aerating surface and receiver having anair-passage therethrough, of an airpurifier comprising a verticallyarranged tower having an air-entrance near the top, an

air-discharge near the bottom communicating with the passage through.the aerator and cooler, a water-supply opening into thetop of the towerand a water-discharge at the bottom of said tower; substantially asdescribed.

4. In a cooler and aerator for milk the combination with theliquid-handling devices embodying an extended cooling and aeratingsurface closed against atmospheric contaminations, of an air purifierand forcer embodying a vertically-arranged tower having a liquid supplyand distributer at the top and a liquid-discharge at the bottom closedto the escape of air, and also having an air-entrance near the top andan air-discharge near the bottom leading to a point in proximity to theaerating and cooling surface; substantially as described.

5. A cooler and aerator for milk embodying three sections in verticalalinement, the central section comprising an external casing and anextended internal cooling and aerating surface, and top and bottomsections communicating with the interior of said central section, andmeans for forcing steam through said sections.

WVILLIAM E. BAILEY.

Witnesses:

THOMAS DURANT, ALEXANDER S. STEWART.

